Thanks, man! I am taking an AC Circuits lab right now, but Digital Logic lab isn't required at my university, so they tack on a few Digital Logic labs at the beginning without covering it in lecture. It has been two years since I took Digital Logic as a lecture, and they have been just giving us a problem and telling us to deal with it. I don't have a Digital Logic text or anything, so this cheat sheet will definitely be of great assistance! I'm glad I found it, and thanks again for posting it.